I do not own Kuroshitsuji or Majiin Tantei Nougami Neuro. This is an AU story, an alternate universe in which the MTNN cast is in the same time-line as Kuroshitsuji. They are all still Japanese, just living in England speaking English. And Yako is a rich noblewoman…it's going to be a long story. Ok. Begin.


Ravens, Spiders, and Parrots, oh my.

"Not enough. Even after consuming all the mysteries of the Demon Word…The hunger in my brain remains unsatiated. Up there. I shall search up there. For the most complicated…The most profound…And the most delicious…The ultimate mystery!


A carriage pulled up on a mansion on a extremely downcast day for England. The driver opened the door, a feminine figure stepped out. She is a skinny, flat-chested Japanese girl with shot blonde hair in a pixie cut and big brown eyes. She has strange hairclips in her hair in the shape of two sharp-teethed lips. Her expression is sullen, yet she fakes a kind smile as the servants of the mansion lead her inside. Her new mansion.

'They say we use up to 20% of our brains. Yet we are capable of going above our percentage when we plan and prepare. It is said criminals and murderers use more than 20% when planning a complicated murder and an alibi.'

The girl was given a tour of the mansion. Servants bowing and introducing themselves. She smiles and introduces herself. She comes up to a big office, her study. A large deskwith a grand leather rolling chair. The girl broke her gaze and followed after her guide to her room.

'Mysteries are defined as something that baffles understanding and cannot be explained. Yet if there is a reasonable explanation, like a murderer and the murder tool, with the cause and the plot. A detective goes against all odds to solve a mystery, to push his brain to the limit. Feeding it. This world is plagued by mysteries. The darkness within humans' hearts. '

They past the kitchen. The girl takes a quick peek inside. Her eyes glitter in gluttony, delicious smells from her new private chefs and their dishes. Her mouth waters as she reaches for a biscuit. She is dragged away by her guide, she is whining.

'I have a mystery. A strange complicated murder mystery. The Scotland Yard has done nothing about the obvious murder. Yet how is it the murder got in my home in the first place? Did he really commit suicide like they concluded?'

The new mistress of the mansion was left in her room. Her servants offered her to help with unpacking, yet new to the aristocratic luxurious lifestyle, she bowed and said no thank you. She closed the door looked around. The room was big, grand, and beautiful. She couldn't believe she was here. She'd never imagine…

She kneeled down by her queen size bed. She opened her suitcase and began to unpack her civilian clothes. She had to get of these, she guessed. She'd had to dress in elegant noble clothing, tailored just for her made from the finest materials that money could buy. This inheritance…no wonder her father wished for a civilian's life as a commoner.

On the top inside of her second case, was a picture frame. The girl lifted the picture numbly. She saw herself, her mother; she was a brunette, tall, lovely, and thin, her father, dark haired and kindly. Who would want to kill such a sweet man? It was a conundrum.

'I want nothing. I do not wish for wealth or luxuries. I want…to solve my mystery. To find his killer. My mystery…'

"Do you wish to unravel the mystery?" an ominous deep male voice echoed in the room. The girl's head shot up, her eyes on alert.

"Who's that?" she asked, looking around the huge master bedroom. She did not see anyone, the doors and windows were shut. She started to get anxious. "Is someone there?" her eyes scanned the room once more. She saw a flash of platinum blonde come from the ceiling.

Standing on the ceiling, as if he could defy the laws of gravity, was a man. A strange eccentric man. Dark bangs in front, platinum blonde hair in the back. A pale, slightly green, complexion. Huge hypnotic green eyes, a grin showing tiny sharp white teeth. He wore a bright blue suit with a white cravat, tiny upside-down triangle decorating it as button, even some as clips at the tips of his longish hair. His dark red gloved hands on his hips.

The girl gasped and fell back in utter surprise. Never had she seen a man like this. His eyes glowed a hypnotic green, ominous and full of evil and intent.

"You will be perfect as my disguise!" The man said wickedly. He cackled as he stared down at the girl.


It was our new beginning. This is how we met. And it will change ours as well as two other human nobles' paths.

So how was that? This is my side-project I've always wanted to do. These two are one of my favorite demon-themed animes. I've seen other very well done fictions, yet they are not done. I don't know if this will be done so quickly. The prologue was sort of a blend of both anime's pilot episodes. Though Kuroshitsuji's was at the beginning, MTNN's was at the end.

This'll be set during the second season of Kuroshitsuji. I wonder how Sebastian and Claude will handle Neuro? What will Ciel and Alois do when they meet Yako? Heh. I can't wait.